This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.
So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.
The contact owns 2007 Chevrolet Avalanche. The contact stated that the vehicle started rolling backwards while it was in park. The vehicle was not parked on a hill. The contact took the vehicle to the dealer who stated that there was a related technical service bulletin stating that some vehicles may rock or move forward while in the park position. The dealer also stated that the failure was caused by the transmission fluid releasing from the clutch pad which was normal. The contact stated this was not normal and could have caused the vehicle to crash into the garage. The dealer stated that there was nothing to repair. The failure mileage was 64,400. Updated 02/01/11 updated 03/22/11
The contact owns a 2007 Chevrolet Avalanche 1500. The contact stated that his transmission failed while driving approximately 55 mph. When the accelerator pedal was engaged the transmission acted as if it were in neutral and the vehicle failed to move. The dealer replaced the transmission at 16,000 miles. When the second failure occurred a rebuilt transmission was installed at 26,000 miles. The current and recent failure mileage was 36,000 and the dealer stated that they have to install a rebuilt transmission. The manufacture was notified and the vehicle will be repaired per the warranty. The first failure occurred at 16,000 miles. Updated 10/30/09 the transmission would not go beyond first gear. An internal fault was found in the transmission. There was damage to the input housing at the pump cover seal area. The blower motor was inoperative. The power steering shuddered at low speeds. The hydraulic pressure line was replaced. Updated 10/30/09.
While driving on the highway about 70-75 miles a hour, passing another vehicle, the passing gear engaged, then there was a loss of power to the vehicle. Once the truck got under 40 mph you have no drive gear only 1,2, or 3rd gear will get you moving. Vehicle lost 4th gear.
Complete transmission failure at 27,000 miles. Old part referenced as sun gear or sprag gear breakage between 4-wheel driver transfer case and transmission. Part failed under acceleration nearly causing a crash. Transmission would not engage gears except park. Vehicle could not move under its own power. Part is under back order and will take an unknown amount of time to fix. Other owners are experiencing the same problem around the same mileage. GM was unresponsive to this common problem.
- Cumming, GA, USA
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- Linden, MI, USA